Improvement in windmills



Wind-Mill.

N0.]68,881, Patented Oct.19,l875.

WITNESSES:

I s n'ronum N-PETEHS, PHOTO-LITHOGRAPHER. WASKINGTON. B. c.

UNITED STATES PATENT OFFICE- JOHN OOOK, OF HARLEM, OHIO.

IMPROVEMENT IN WINDMILLS.

Specification forming part of Letters Patent No. 38,881, dated October 19, 1875; application filed August 28, 1875.

To all whom it may concern Be it known that I, JOHN 000K, of Harlem, Delaware county, Ohio, have inventeda new and Improved Windmill, of which the fol- :owing is a specification:

This invention consists of the crank-shaft bearing connected to the horizontal beam Which supports the machine in a simple and efficient way by means of stirrups or yokes; and it also consists of ajoint inthe beam'for the tail-vane to swing around out of the wind when it blows too strong, in combination with a weighted lever for keeping the vane in the wind, all being arranged in a simple and cheap, but efficient, contrivance.

Figure l is a front elevation of my improved windmill. Fig. 2 is a sectional elevation taken on the line was, and Fig. 3 is a detail plan view.

shaft 'E of the wheel F, which are fastened to the beam in a simple but permanent manner by the stirrups or yokes G and nuts H, which clamp the bearings firmly against the under side of the beam. I represents the joint in the beam for allowing the tail-vane to swing around parallel with the wheel and the vane K when the wind blows too hard, and L is the weighted lever for holding the vane in the axis of the wheel for keeping the wheel at work.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 7 l. The shaft-bearings D, secured to the beam A by the stripsG and nuts H, substantially as specified.

2. The combination of the weighted elbowlever L and connecting arm or link with the jointed beam A, vane J, and the wheel F, all constructed and relatively arranged as set forth.

JOHN COOK. 

